It reduces clerverly the number of faces of your model up to 80% keeping all details
Once optimization has been computed, you can modify the level of details in real time
It keeps materials UV textures, vertex colors, user normals
It keep mesh symmetry
It protects object boundaries, material boundaries, UV seams...
It includes progressive optimization that first optimize objects with many faces in your scene.
It offers an OpenGL preview which simplifies optimization control
It can import/export many 3D formats (collada, xsi, lxo, 3ds, obj, stl, skp...) and performs file update to keep animation, bones, shaders...
It includes batch optimization module. Optimize a set of files and define the optimization levels you need
It includes merge faces / weld vertexes features
The stand alone version allows to use it whenever you need it in a simple way